Ophthalmic Migraine

I was diagnosed with Ophthalmic Migraine (Ocular Migraine). So, my sight fades in my left eye and after maybe 10-20 minutes I regain my sight. It's only the lower part of the eye. Since this diagnose, I've noticed that when I chew/eat my left jaw hurts to the point I don't even want to continue eating. I mentioned this to the doctor and was told it could be my sinus, but reading this it seems like it's part of this Myasthenia gravis. I would love to hear if anyone is having the same symptoms.